Ascending/descending guiding structure of a support arm of a display

ABSTRACT

An ascending/descending guiding structure of a support arm of a display, including a sleeve and a slide member. The sleeve defines a receiving space in which the slide member is slidably received. An inner face of a wall of the receiving space is formed with multiple longitudinally extending channels or ribs. An outer face of the slide member is formed with longitudinally extending ribs or channels in cooperation with the channels or ribs of the receiving space of the sleeve. The ribs are inlaid in the channels and guided by the channels, whereby the slide member can be smoothly stably extended out of the sleeve or retracted into the sleeve at low frictional resistance. The outer face of the sleeve is further formed with outer ribs for abutting against an inner face of the jacket so as to prevent the jacket from abrading and wearing the outer face of the sleeve. The ascending/descending guiding structure further includes a jacket holding the slide member. The jacket is connected with the slide member and movable along with the slide member, whereby the jacket always shades an adjoining section between the sleeve and the slide member.

BACKGROUND OF THE INVENTION

The present invention is related to an ascending/descending guidingstructure of a support arm of a display, which is made at low cost andenables the panel of the display to be smoothly adjusted in height. Inaddition, when adjusting the height of the panel, the surface of thesupport arm will not be worn.

FIG. 1 shows a conventional telescopic support arm 6 of a display. Thesupport arm 6 is composed of two opposite metal main support racks 61and a metal slide member 62. The main support racks 61 have oppositechannels 613. Two lateral sides of one end of the slide member 62 areinlaid in the channels 613. A panel bracket 622 is connected with a topend of the slide member 62. The bottom end of the slide member 62 isconnected with a slide block 623. Multiple ball bodies are disposed onthe lateral sides of the slide block 623 to roll along the channels 613.The lateral sides of the slide block 623 are guided by the walls of thechannels 613, whereby the slide block 623 and the slide member 62 cantelescopically slide between the main support racks 61 along thechannels 613. Two coiled torque leaf springs 63 are connected betweenthe top ends of the main support racks 61 and the bottom end of theslide member 62. An adjustment bolt 6141 is disposed on the main supportrack 61 for pressing a frictional block 64 against the slide member 62.The resilient force of the unwound torque leaf springs 63 can offset theweight of the panel. The frictional force exerted onto the slide member62 by the frictional block 64 is changeable in cooperation with theresilient force of the torque leaf springs 63. Accordingly, the panel ofthe display can be adjusted to a desired height. The metal material isexpensive. Therefore, the metallic slide member 62 and main supportracks 61 of the telescopic support arm 6 are made at high cost.Moreover, these components are quite heavy and relatively uneasy totransfer.

SUMMARY OF THE INVENTION

It is therefore a primary object of the present invention to provide anascending/descending guiding structure of a support arm of a display,which is made at low cost and enables the panel of the display to besmoothly adjusted in height at low frictional resistance. In addition,when adjusting the height of the panel, the surface of the support armwill not be worn.

It is a further object of the present invention to provide the aboveascending/descending guiding structure of the support arm of thedisplay, in which the slide member and the slide member are made fromlubricant plastic material instead of the metal material withoutaffecting the strength. Therefore, the cost for the material is lowered.

According to the above objects, the ascending/descending guidingstructure of the present invention includes a sleeve and a slide member.The sleeve defines a receiving space in which the slide member isslidably received. An inner face of a wall of the receiving space isformed with multiple longitudinally extending channels or ribs. An outerface of the slide member is formed with longitudinally extending ribs orchannels in cooperation with the channels or ribs of the receiving spaceof the sleeve. The ribs are inlaid in the channels and guided by thechannels, whereby the slide member can be smoothly stably extended outof the sleeve or retracted into the sleeve at low frictional resistance.

The present invention can be best understood through the followingdescription and accompanying drawings wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a conventional support arm of a display;

FIG. 2 is a perspective exploded view of the ascending/descendingguiding structure of the support arm of the display of the presentinvention;

FIG. 3 is a perspective exploded view of the slide member and the sleeveof the ascending/descending guiding structure of the support arm of thepresent invention;

FIG. 4 is a perspective assembled view of the ascending/descendingguiding structure of the support arm of the present invention;

FIG. 5 is a longitudinally sectional view of the ascending/descendingguiding structure of the support arm of the present invention;

FIG. 6 is a cross-sectional view of the ascending/descending guidingstructure of the support arm of the present invention in one aspect; and

FIG. 7 is a cross-sectional view of the ascending/descending guidingstructure of the support arm of the present invention in another aspect.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIG. 2. The ascending/descending guiding structure ofthe support arm of the display of the present invention includes asleeve 1, a slide member 2 and a jacket 3. One end of the sleeve 1defines a receiving space 10. The inner face of the wall of thereceiving space 10 is formed with multiple longitudinally extendingchannels 12 and at least one main groove 13. The outer face of a firstend of the sleeve 1 is formed with multiple outer ribs 16. A second endof the sleeve 1 is formed with multiple resilient latch plates 11 eachhaving a hook section 111. The second end of the sleeve 1 is insertedinto a dent 41 of a base 4. The bottom of the dent 41 is formed withmultiple latch slots 42. The hook sections 111 of the resilient latchplates 11 are latched in the latch slots 42 to locate the sleeve 1 onthe base 4. The slide member 2 has multiple longitudinally extendingslats and multiple transverse reinforcing slats 24 connected between thelongitudinal slats. Accordingly, the slide member 2 has a lightweightand strengthened beehive structure to save material. A first end of theslide member 2 is formed with multiple locating thread holes 21. A panelbracket 5 is formed with multiple locating holes 51. Bolts 52 are passedthrough the locating holes 51 of the panel bracket 5 and screwed intothe locating thread holes 21 to lock the panel bracket 5 with the slidemember 2. A second end of the slide member 2 is formed with multiplenotches 25. Two ends of at least one shaft 141 are inserted in thenotches 25. A coiled torque leaf spring 14 is fitted around the shaft141. Two lateral sides of the slide member 2 are formed withlongitudinal ribs 22. In addition, at least one projecting block 23 isdisposed on outer face of the slide member 2. The longitudinal ribs 22and the projecting block 23 respectively correspond to the channels 12and the main groove 13 of the sleeve 1. A front side of the projectingblock 23 is formed with a guide slope 231. The jacket 3 is composed oftwo casings 31, 32 respectively having tenons 311 and mortises 321. Thetenons 311 are inserted in the mortises 321 to mate the casings 31, 32with each other. In addition, the middles of the top ends of the casings31, 32 are respectively formed with two opposite recesses 312, 322.After mated with each other, the recesses 312, 322 together form a slotat the center of the top end of the jacket 3.

FIG. 4 is an assembled view of the present invention. Also referring toFIGS. 5 to 7, when assembled, the second end of the slide member 2extends into the receiving space of the sleeve 1. The ribs 22 (orchannels) are inlaid in the channels 12 (or the ribs). The projectingblock 23 is inlaid in the main groove 13. The guide slope 231 serves toguide the projecting block 23 into the main groove 13. In addition, adamper 131 is disposed in the main groove 13 near the first end of thesleeve 1. The walls of the channels 12 serve to guide the ribs 22 tomove along the channels 12, whereby the slide member 2 can extend out ofthe receiving space or retract into the receiving space. The slidemember 2 is stably fitted in the sleeve 1 at low frictional contactwithout swinging.

An outer end of the torque leaf spring 14 is formed with a hook section143 for hooking an edge of the opening the upper end of the receivingspace of the sleeve 1. Accordingly, the torque leaf spring 14 isinterconnected between the sleeve 1 and the slide member 2. Theresilient force of the unwound torque leaf spring 14 serves to balancethe weight of the display and other components. By means of anadjustment bolt 132, the normal pressure applied by the damper 131 tothe outer face of the slide member 2 is adjustable. Therefore, theresistance against the slide member 2 when sliding within the sleeve 1is changeable in cooperation with the resilient force of the torque leafspring 14. Accordingly, the panel of the display can be adjusted to adesired height.

The locating bolts 52 are passed through the slot together formed by therecesses 312, 322 and screwed into the locating thread holes 21 of theslide member 2, whereby the top end of the jacket 3 is clamped betweenthe panel bracket 5 and the first end of slide member 2. The jacket 3holds the slide member 2 and has such a length that when the jacket 3 isascended along with the slide member 2 to an upper dead end, the jacket3 can still at least shade an adjoining section between the sleeve 1 andthe slide member 2. The outer ribs 16 of the sleeve 1 serve to abutagainst inner face of the jacket 3 so as to prevent the jacket 3 fromabrading and wearing the outer face of the sleeve 3.

The ribs 22 serve to reduce the frictional force between the sleeve 1and the slide member 2. Also, the sleeve 1 and the slide member 2 can bemade from lubricant plastic material so as to further reduce thefrictional resistance. Alternatively, the jacket 3 can be an integratedbody to achieve the same effect.

The above embodiments are only used to illustrate the present invention,not intended to limit the scope thereof. Many modifications of the aboveembodiments can be made without departing from the spirit of the presentinvention.

1. An ascending/descending guiding structure of a support arm of adisplay, comprising: a sleeve defining a receiving space, an inner faceof a wall of the receiving space being formed with multiplelongitudinally extending channels or ribs; and a slide member slidablyreceived in the receiving space of the sleeve, an outer face of theslide member being formed with longitudinally extending ribs or channelsin cooperation with the channels or ribs of the receiving space of thesleeve, the ribs being inlaid in the channels and guided by thechannels, whereby the slide member can be smoothly stably extended outof the sleeve or retracted into the sleeve at low frictional resistance.2. The ascending/descending guiding structure of the support arm of thedisplay as claimed in claim 1, further comprising a jacket holding theslide member, the jacket being connected with the slide member andmovable along with the slide member, whereby the jacket always shades anadjoining section between the sleeve and the slide member.
 3. Theascending/descending guiding structure of the support arm of the displayas claimed in claim 2, wherein the jacket is composed of two casingsrespectively having tenons and mortises, the tenons being inserted inthe mortises to mate the casings with each other to together form thejacket.
 4. The ascending/descending guiding structure of the support armof the display as claimed in claim 2, wherein the outer face of thesleeve is further formed with outer ribs for abutting against an innerface of the jacket so as to prevent the jacket from abrading and wearingthe outer face of the sleeve.
 5. The ascending/descending guidingstructure of the support arm of the display as claimed in claim 3,wherein the outer face of the sleeve is further formed with outer ribsfor abutting against an inner face of the jacket so as to prevent thejacket from abrading and wearing the outer face of the sleeve.
 6. Theascending/descending guiding structure of the support arm of the displayas claimed in claim 1, wherein the inner face of the wall of thereceiving space is further formed with at least one main groove, atleast one projecting block being disposed on outer face of the slidemember corresponding to the main groove, the projecting block beingslidably inlaid in the main groove and guided by the wall thereof,whereby the slide member can slide within the sleeve along the maingroove.
 7. The ascending/descending guiding structure of the support armof the display as claimed in claim 2, wherein the inner face of the wallof the receiving space is further formed with at least one main groove,at least one projecting block being disposed on outer face of the slidemember corresponding to the main groove, the projecting block beingslidably inlaid in the main groove and guided by the wall thereof,whereby the slide member can slide within the sleeve along the maingroove.
 8. The ascending/descending guiding structure of the support armof the display as claimed in claim 3, wherein the inner face of the wallof the receiving space is further formed with at least one main groove,at least one projecting block being disposed on outer face of the slidemember corresponding to the main groove, the projecting block beingslidably inlaid in the main groove and guided by the wall thereof,whereby the slide member can slide within the sleeve along the maingroove.
 9. The ascending/descending guiding structure of the support armof the display as claimed in claim 4, wherein the inner face of the wallof the receiving space is further formed with at least one main groove,at least one projecting block being disposed on outer face of the slidemember corresponding to the main groove, the projecting block beingslidably inlaid in the main groove and guided by the wall thereof,whereby the slide member can slide within the sleeve along the maingroove.
 10. The ascending/descending guiding structure of the supportarm of the display as claimed in claim 5, wherein the inner face of thewall of the receiving space is further formed with at least one maingroove, at least one projecting block being disposed on outer face ofthe slide member corresponding to the main groove, the projecting blockbeing slidably inlaid in the main groove and guided by the wall thereof,whereby the slide member can slide within the sleeve along the maingroove.
 11. The ascending/descending guiding structure of the supportarm of the display as claimed in claim 1, wherein the slide member hasmultiple longitudinally extending slats and multiple transversereinforcing slats connected between the longitudinal slats, whereby theslide member has a substantially beehive structure.
 12. Theascending/descending guiding structure of the support arm of the displayas claimed in claim 2, wherein the slide member has multiplelongitudinally extending slats and multiple transverse reinforcing slatsconnected between the longitudinal slats, whereby the slide member has asubstantially beehive structure.
 13. The ascending/descending guidingstructure of the support arm of the display as claimed in claim 3,wherein the slide member has multiple longitudinally extending slats andmultiple transverse reinforcing slats connected between the longitudinalslats, whereby the slide member has a substantially beehive structure.14. The ascending/descending guiding structure of the support arm of thedisplay as claimed in claim 4, wherein the slide member has multiplelongitudinally extending slats and multiple transverse reinforcing slatsconnected between the longitudinal slats, whereby the slide member has asubstantially beehive structure.
 15. The ascending/descending guidingstructure of the support arm of the display as claimed in claim 5,wherein the slide member has multiple longitudinally extending slats andmultiple transverse reinforcing slats connected between the longitudinalslats, whereby the slide member has a substantially beehive structure.16. The ascending/descending guiding structure of the support arm of thedisplay as claimed in claim 6, wherein the slide member has multiplelongitudinally extending slats and multiple transverse reinforcing slatsconnected between the longitudinal slats, whereby the slide member has asubstantially beehive structure.
 17. The ascending/descending guidingstructure of the support arm of the display as claimed in claim 7,wherein the slide member has multiple longitudinally extending slats andmultiple transverse reinforcing slats connected between the longitudinalslats, whereby the slide member has a substantially beehive structure.18. The ascending/descending guiding structure of the support arm of thedisplay as claimed in claim 8, wherein the slide member has multiplelongitudinally extending slats and multiple transverse reinforcing slatsconnected between the longitudinal slats, whereby the slide member has asubstantially beehive structure.
 19. The ascending/descending guidingstructure of the support arm of the display as claimed in claim 1,wherein the slide member and the slide member are made from lubricantplastic material.
 20. The ascending/descending guiding structure of thesupport arm of the display as claimed in claim 2, wherein the slidemember and the slide member are made from lubricant plastic material.21. The ascending/descending guiding structure of the support arm of thedisplay as claimed in claim 3, wherein the slide member and the slidemember are made from lubricant plastic material.
 22. Theascending/descending guiding structure of the support arm of the displayas claimed in claim 4, wherein the slide member and the slide member aremade from lubricant plastic material.
 23. The ascending/descendingguiding structure of the support arm of the display as claimed in claim5, wherein the slide member and the slide member are made from lubricantplastic material.
 24. The ascending/descending guiding structure of thesupport arm of the display as claimed in claim 6, wherein the slidemember and the slide member are made from lubricant plastic material.25. The ascending/descending guiding structure of the support arm of thedisplay as claimed in claim 7, wherein the slide member and the slidemember are made from lubricant plastic material.
 26. Theascending/descending guiding structure of the support arm of the displayas claimed in claim 8, wherein the slide member and the slide member aremade from lubricant plastic material.
 27. The ascending/descendingguiding structure of the support arm of the display as claimed in claim11, wherein the slide member and the slide member are made fromlubricant plastic material.
 28. The ascending/descending guidingstructure of the support arm of the display as claimed in claim 12,wherein the slide member and the slide member are made from lubricantplastic material.
 29. The ascending/descending guiding structure of thesupport arm of the display as claimed in claim 13, wherein the slidemember and the slide member are made from lubricant plastic material.30. The ascending/descending guiding structure of the support arm of thedisplay as claimed in claim 16, wherein the slide member and the slidemember are made from lubricant plastic material.
 31. Theascending/descending guiding structure of the support arm of the displayas claimed in claim 17 herein the slide member and the slide member aremade from lubricant plastic material.
 32. The ascending/descendingguiding structure of the support arm of the display as claimed in claim18, wherein the slide member and the slide member are made fromlubricant plastic material.